Direct-driven breeze wind driven generator system

Abstract

The invention relates to the technical field of wind power generation, in particular to a direct-driven breeze wind driven generator system. The system comprises a wind driven generator, an electric control system and an electric storage device, wherein the wind driven generator comprises a generator cabin, an impeller, a hub, a fairing, a tail vane, a generator rear cover, a vertical rod and a vertical rod mounting seat, the fairing is mounted on the impeller, a coreless permanent magnet alternating-current generator is arranged in the generator cabin, the generator is fixedly connected with the hub through a generator spindle, an automatic brake device is arranged in the generator rear cover, and the automatic brake device is used for braking the wind driven generator when the rotating speed of the impeller is greater than a set rated rotating speed. By arranging the coreless permanent magnet alternating-current generator, the cogging effect of a traditional generator is eliminated, and the rotating resistance of wind wheel blades is greatly reduced; and the wind energy utilization rate of the small wind driven generator is greatly increased through the design of the two-stage energy storage electric control system.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a direct-drive breeze wind power generator system. Background technique [0002] A wind turbine is a non-polluting and clean energy device that uses wind energy to generate electricity. It uses the wind to blow the blades of the wind generator to rotate, and drives the electromagnetic induction generator to generate electricity. The start-up wind speed of traditional wind turbines generally requires no less than 3 wind speeds, and the rated operating wind speed generally requires 5-6 wind speeds or above. This has certain requirements for the use environment of wind turbines, resulting in limited application areas. Traditional wind turbines are generally large-scale equipment, which are only suitable for areas with strong winds. For households in areas with only small or light winds, or rural households, large wind turbines are useless. The blades of wind turbines ...

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Problems solved by technology

[0004] The existing wind generators mainly have the following disadvantages: the starting wind speed is too high, and when the wind speed is below 5 m / s, it hardly generates electricity, or the power generation is too low, and has no practical value in a wide range of low wind speed areas, such as , the lighting of municipal street lamps cannot be stably maintained; the cogging effect of the wind turbine has not been eliminated, and this cogging effect becomes the accompanying resistance to the rotation of the fan blades, resulting in a low speed in the case of light wind and insufficient electric power; the wind turbine The weight of the main part is too large, and the rotating shaft is too tight, which is not conducive to flexible wind response and quick start-up of power generation in light wind conditions; the output voltage of wind turbines changes frequently due to changes in wind speed in nature, and the efficient use of this type of electricity requires special design. The electronic control system, that is, the wind turbine controller

In the windy or typhoon season, this braking method will often fail, causing the fan blades to be damaged or even broken, causing damage to people on the ground or buildings

Traditional wind turbine blades are basically completed manually and semi-mechanically, with low efficiency, low output and unstable quality

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